Help with slowing down this simple motor

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SUMMARY

The discussion centers on methods to slow down a motor for specific applications. Participants recommend reducing voltage as the most straightforward approach, with a particular emphasis on using a rheostat for adjustable speed control. The use of a rheostat allows for real-time tuning, making it a preferred solution over fixed resistors. Other suggestions, such as using less wire, were deemed ineffective.

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heathphysics
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The motor that I've built is the one below its a working motor and spins fast, but I have to slow it down to as much as I can for its intended purpose. Does anyone have any ideas as to how I can make this motor spin slowly. I've tried using less wire but it doesn't work. Note: for the piece of cork, I've used wiring tape instead. Help!
 

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Tried lowering the voltage? or putting in a resistor?
 
That's a very nice illustration, Healthphysics.
I agree with Deakie that dropping the voltage is probably the easiest way. I'd modify his resistor suggestion by using a rheostat. That will allow you to tune it on the fly rather than having to swap out hard-wired parts until you get the speed that you want.
 

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